EP 1422777 A1 20040526 - Fuel cell vehicle detecting and controlling the H2-concentration in the exhaust gas
Title (en)
Fuel cell vehicle detecting and controlling the H2-concentration in the exhaust gas
Title (de)
Brennstoffzellenfahrzeug, welches die H2-Konzentration im Abgas misst und kontrolliert
Title (fr)
Véhicule ayant des piles à combustible détectant et contrôlant la concentration d'hydrogène dans le gaz d'échappement
Publication
Application
Priority
JP 2002340784 A 20021125
Abstract (en)
A fuel cell system comprises a fuel cell (1), a hydrogen discharge valve (6) for discharging hydrogen from the fuel cell (1) under a predetermined condition, a hydrogen concentration reduction device (10) for reducing the concentration of hydrogen discharged from the hydrogen discharge valve, a hydrogen sensor (45) for detecting an instantaneous hydrogen concentration of a gas processed by the hydrogen concentration reduction device and an average hydrogen concentration calculating unit for calculating an average hydrogen concentration per hour of a gas processed by the hydrogen concentration reduction device, wherein a hydrogen discharge from the fuel cell by the hydrogen discharge valve is prohibited in the event that an instantaneous hydrogen concentration detected by the hydrogen sensor (45) exceeds a first threshold, or in the event that an average hydrogen concentration calculated by the average hydrogen concentration calculating unit exceeds a second threshold which is lower than the first threshold. <IMAGE>
IPC 1-7
IPC 8 full level
CPC (source: EP US)
H01M 8/04388 (2013.01 - EP US); H01M 8/04395 (2013.01 - EP US); H01M 8/04462 (2013.01 - EP US); H01M 8/04559 (2013.01 - EP US); H01M 8/04761 (2013.01 - EP US); H01M 8/04805 (2013.01 - EP US); H01M 8/0662 (2013.01 - EP US); Y02E 60/50 (2013.01 - EP)
Citation (search report)
- [PX] WO 03010841 A2 20030206 - BALLARD POWER SYSTEMS [CA], et al
- [AD] JP 2002093438 A 20020329 - HONDA MOTOR CO LTD
- [A] US 2001014415 A1 20010816 - IIO MASATOSHI [JP], et al
- [A] JP S6489155 A 19890403 - HITACHI LTD
- [AP] WO 03032426 A1 20030417 - UTC FUEL CELLS LLC [US]
- [A] JP H0831436 A 19960202 - TOSHIBA CORP
Designated contracting state (EPC)
DE GB
DOCDB simple family (publication)
EP 1422777 A1 20040526; EP 1422777 B1 20110112; CA 2450618 A1 20040525; CA 2450618 C 20110208; DE 60335698 D1 20110224; JP 2004178845 A 20040624; JP 4384401 B2 20091216; US 2004106023 A1 20040603; US 7264900 B2 20070904
DOCDB simple family (application)
EP 03026934 A 20031125; CA 2450618 A 20031125; DE 60335698 T 20031125; JP 2002340784 A 20021125; US 72161503 A 20031124